Associations of practice structure and organisation with practice immunisation coverage and timeliness.
| Coverage | Timeliness | |||||
|---|---|---|---|---|---|---|
| Practice characteristic (number of practices) | Median % received all immunisations (25–75th centile) | P-value adjusted for region and governance | P-value adjusted for region, governance, social deprivationa, age and age at registration | Median % with no delayed immunisations (25–75th centile) | P-value adjusted for region and governance | P-value adjusted for region, governance, social deprivationa, age, and age at registration |
| Generic practice factors | ||||||
| Practice management system used | ||||||
| Medtech32 (89) | 72 (62–78) | <0.001 | 0.001 | 59 (46–64) | <0.001 | 0.010 |
| Other (28) | 63 (44–76) | 42 (25–60) | ||||
| Staff shortages | ||||||
| Yes (76) | 67 (53–75) | 0.010 | 0.100 | 50 (37–63) | 0.007 | 0.040 |
| No (41) | 76 (65–79) | 61 (44–66) | ||||
| Practice charges for visits by registered patients | ||||||
| Yes (31) | 75 (70–82) | <0.001 | 0.200 | 49 (35–64) | 0.002 | 0.240 |
| No (86) | 65 (52–75) | 61 (57–64) | ||||
| Percentage of patients owing money to practice | ||||||
| >15% (43) | 62 (47–73) | <0.001 | 0.270 | 47 (32–62) | <0.001 | 0.180 |
| ≤15% (73) | 75 (65–80) | 60 (47–66) | ||||
| Immunisation-specific practice factors | ||||||
| Specified appointments or clinics for immunisation | ||||||
| Yes (40) | 69 (59–77) | 0.030 | 0.270 | 57 (43–64) | 0.050 | 0.430 |
| No (77) | 71 (57–77) | 55 (38–64) | ||||
| GPs sometimes give the immunisations | ||||||
| Yes (44) | 70 (64–79) | 0.110 | 0.580 | 60 (46–66) | 0.020 | 0.200 |
| No (73) | 70 (54–75) | 55 (32–62) | ||||
| Frequency of immunisation audit | ||||||
| At least monthly (32) | 72 (62–77) | 0.005 | 0.250 | 58 (47–62) | 0.070 | 0.900 |
| Less often (85) | 70 (56–77) | 51 (37–65) | ||||
↵a Percentage in most socioeconomically deprived quintile included in model as a continuous variable. Socioeconomic deprivation measured using the NZDep2001 Index of Deprivation, a small area-based measure that combines nine variables from the 2001 Census that reflect aspects of material and social deprivation.19